Touchscreen adaptor for a computer monitor



FIG. 1 is a top front and right side perspective view of a touchscreen adaptor for a computer monitor showing our new design;

FIG. 2 is a top front and left side perspective view thereof;

FIG. 3 is a front view thereof;

FIG. 4 is an enlarged left side view thereof;

FIG. 5 is an enlarged right side view thereof;

FIG. 6 is a rear view thereof;

FIG. 7 is a top rear and right side perspective view thereof;

FIG. 8 is a top rear and left side perspective view thereof; and,

FIG. 9 is a reduced top front and right side perspective view thereof with a computer monitor being shown in broken lines for illustrative purposes only and forming no part of the claimed design. 

The ornamental design for a touchscreen adaptor for a computer monitor, as shown and described. 